Weft inserting mechanism for looms for weaving



0. SHIMWELL Dec. 4, 1934.

WEFT INSERTINQ MECHANISM FOR LOOMS FOR WEAVING Filed March 16, 1933Patented Dec. 4, 1934 PATENT OFFICE o 1 WEFT INSERTING MECHANISM FORLOOMS FOR ,WEAVING Oliver Shimwell, Gawsworth, England Application March16, 1933, Serial No. 661,173 In Great Britain March 16, 1932 3 Claims.

This invention relates to weft inserting mechanism for looms forweaving. Such mechanism usually comprises shuttles containing the weftyarn upon pirns, cops or the like, or weft carriers (used in shuttlelesslooms with stationary weft supplies) of shuttle like form which pick upthe weft yarn at the opposite sides of the sheet of warp threads andtransfer it into the latter. It will be appreciated that when theshuttle or weft carrier enters the shed it is more or less out ofcontrol; in fact there is no control after it leaves the shuttle boxwhere it has received its driving blow. In addition the shuttles andweft carriers ride upon the warp threads upon the slay and are liable todamage the same especially if the shuttle be heavy and its fiight beinterfered with from any cause.

The object of my present invention is to provide improved means forcontrolling the flight of the weft inserting device (hereinafter termedshuttle) such means maintaining the shuttle out of contact with the warpthreads so that damage thereto is obviated.

Heretofore it has been proposed to build a shuttle with spindlestherein, which run in the hooked ends of parts secured against the faceof the reed so that in effect the shuttle is, during its flightoverhanging from two rails of comb like form one above the other, uponthe reed face.

This invention comprises the improved constructions and arrangements ofweft inserting mechanism for looms hereinafter described and claimed.

Referring to the accompanying explanatory drawing:

Figure 1 is a perspective view, and Figure 2 a sectional side elevationshowing a modified construction of shuttle and slay in accordance withmy invention.

In the figures the slay sole is shown at a, the slay top at b, the reedat c, the shuttle at d, the warp threads at e, and the weft thread(trailing from the shuttle eye) at f. The cop within the shuttle islettered d The shuttle d rides upon a series of ridges or projections kon the sole plate is and is held down upon such plate by overhead arms25 each of which arms lies throughout its height in the same verticalplane adjustably secured to a plate 26 hingedly attached at 2'7 to theslay top I). The said arms come over the shuttle immediately adjacent tothe reed as shown, and pass between the warp threads. The arms can beput into and out of service by swinging the plate 26 upwards about itshinge supports. The fingers q maintain the shuttle against the reed eduring its flight. The ridges k keep the shuttle clear of the warpthreads which pass beneath the shuttle so preventing damage thereto andat the same time reducing the frictional retardation of the flight ortravel of the shuttle.

The arms 25 and fingers q both pass between the warp threads withoutunduly disturbing the same. The fingers q which bear against a hard woodbase h of the shuttle in its fiight are upon a plate 1) which is securedby studs and long slots (to per- '65 mit of lateral adjustment of thefingers) to a plate n upon the slay sole, the sole plate 7c having theridges k thereon being secured to the plate 11., as shown in Figure 2.

The shuttle is tapered for a considerable length at each end, one endbeing shown in Figure 1, the object being to enable the shuttle to enterthe shed without touching the warp threads much earlier than would bethe case with a blunt ended shuttle. The shuttle can in fact commence to7 enter the shed before the slay has returned to its initial positionafter the beating-up operation.

I find that by using shuttle control arrangements in accordance with myinvention, I can if desired use larger shuttles than at present employedwith larger cops, pirns or the like therein, so that the number of picksthat the shuttle will make before the cop or pirn is exhausted, isincreased without any liability of damage to the warp threads by theshuttle.

It will be seen that in accordance with my invention the shuttle runsupon the slay and is held against the slay and against the reed (so thatits flight is controlled) by parts upon the slay. I

In addition, the shuttle is held clear of the warp threads so that itcannot damage them. Further thefingers or arms q and 25 whilst theydivide the warp threads, do not in any way control the fineness of thethreads which can be used such as would be the case if such partsconstituted a comb adjacent to the reed.

What I claim is:

1. Weft inserting mechanism for looms comprising in combination a reed,a slay, a sole plate mounted on the said'slay, ridges upon the said soleplate adapted to hold the shuttle clear of the sole plate and above thelower row of warp threads, arms adapted to pass between the warp threadsdepending from the slay top to come over the shuttle in its flight andmaintain it upon the ridges, and fingers upon the slay sole adapted tobear upon the front of the shuttle and maintain it against the reed.

2. Weft inserting mechanism for looms comprising in combination a reed,a slay, a sole plate mounted on the said slay ridges adapted to passbetween the warp threads upon the said sole plate to raise the shuttleclear of the sole plate, arms adapted to pass between the warp threadsand coming over the shuttle in its flight to maintain it upon theridges, a plate hingedly carried by the sole top having the said armsthereon, and adjustable fingers upon the slay sole adapted to bear uponthe base of the front of the shuttle in its flight and maintain itagainst the reed;

3. Weft inserting mechanism for looms comprising in combination a reed,a slay, a sole plate mounted on the said slay, a plate secured upon theslay sole, a ridged plate secured upon the said plate, the ridgesforming a raised surface to support the shuttle in its flight clear ofthe warp threads beneath, a plate with fingers projecting upwardlytherefrom also adjustably secured upon the first mentioned plate, thefingers coming between the warp threads and bearing against the base ofthe front of the shuttle in its flight to maintain the shuttle againstthe reed, a plate hingedly secured upon the slay top at the side of thereed at which the shuttle travels, arms adapt ed to pass between theupper warp threads adjustably attached to said hinged plate and. bearingupon the upper surface of the shuttle adjacent to the reed to maintainthe shuttle upon the ridged plate in its flight.

OLIVER SHIMWELL.

